Hughes B., Henderson I. S., Robertson A. W. 2006. Conservation of the globally threatened white-headed duck, Oxyura leucocephala, in the face of hybridization with the North American ruddy duck, Oxyura jamaicensis: results of a control trial. Acta zoologica Sinica, 52: 576-578.

Hughes B., Henderson I. S., Robertson A. W. 2006. Conservation of the globally threatened white-headed duck, Oxyura leucocephala, in the face of hybridization with the North American ruddy duck, Oxyura jamaicensis: results of a control trial. Acta zoologica Sinica, 52: 576-578.